From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: fgei <fgei@gmail.com>
Date: Tue, 11 Apr 2023 07:14:45 +0000
Subject: [PATCH] Helper class for modifying preferences at chrome layer

---
 chrome/android/chrome_ext_java_sources.gni    |  1 +
 .../browser/settings/SettingsExtUtils.java    | 71 +++++++++++++++++++
 2 files changed, 72 insertions(+)
 create mode 100644 chrome/android/java/src/org/chromium/chrome/browser/settings/SettingsExtUtils.java

diff --git a/chrome/android/chrome_ext_java_sources.gni b/chrome/android/chrome_ext_java_sources.gni
index fe72e9b1d3abb..b3a489f124aa8 100644
--- a/chrome/android/chrome_ext_java_sources.gni
+++ b/chrome/android/chrome_ext_java_sources.gni
@@ -3,4 +3,5 @@
 # found in the LICENSE file.
 
 chrome_ext_java_sources = [
+  "java/src/org/chromium/chrome/browser/settings/SettingsExtUtils.java",
 ]
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/settings/SettingsExtUtils.java b/chrome/android/java/src/org/chromium/chrome/browser/settings/SettingsExtUtils.java
new file mode 100644
index 0000000000000..c9907624c4fc1
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/settings/SettingsExtUtils.java
@@ -0,0 +1,71 @@
+// Copyright 2023 GrapheneOS
+// Use of this source code is governed by a GPLv2-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.settings;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.preference.Preference;
+import androidx.preference.PreferenceFragmentCompat;
+import androidx.preference.SwitchPreferenceCompat;
+
+import org.chromium.base.ThreadUtils;
+
+public class SettingsExtUtils {
+
+    public static void safelyUpdatePreference(
+        @Nullable Preference preference,
+        @Nullable String newSummary
+    ) {
+        if (preference == null) return;
+        safelyUpdatePreferenceCommon(preference, newSummary);
+    }
+
+
+    public static void safelyUpdateSwitchPreference(
+        @Nullable SwitchPreferenceCompat switchPref,
+        @Nullable String newSummary,
+        boolean newValue
+    ) {
+        if (switchPref == null) return;
+        safelyUpdatePreferenceCommon(switchPref, newSummary);
+        safelyUpdatePreferenceChecked(switchPref, newSummary, newValue);
+    }
+
+    private static void safelyUpdatePreferenceCommon(
+        @NonNull Preference preference,
+        @Nullable String newSummary
+    ) {
+        ThreadUtils.checkUiThread();
+        if (newSummary != null) {
+            preference.setSummary(newSummary);
+        }
+    }
+
+    private static void safelyUpdatePreferenceChecked(
+        @NonNull SwitchPreferenceCompat switchPref,
+        @Nullable String nativeKey,
+        boolean checked
+    ) {
+        switchPref.setChecked(checked);
+    }
+
+    public static void safelyRemovePreference(
+        @NonNull PreferenceFragmentCompat prefFragment,
+        @NonNull String key
+    ) {
+        Preference preference = prefFragment.findPreference(key);
+        safelyRemovePreference(prefFragment, preference);
+    }
+
+    public static void safelyRemovePreference(
+        @NonNull PreferenceFragmentCompat prefFragment,
+        @Nullable Preference preference
+    ) {
+        ThreadUtils.checkUiThread();
+        if (preference != null) {
+            prefFragment.getPreferenceScreen().removePreference(preference);
+        }
+    }
+}